The Swiss star, considered by many to be the best tennis player of all time, talks about his extraordinary career.

Plus, Martin Jacques, the author of When China Rules the World, and Patrick Chovanec, an associate professor at Tsinghua University's School of Economics and Management in Beijing, discuss the future of China.

And as world leaders meet in Lisbon for the Nato summit, Sir David talks to Anders Fogh Rasmussen, Nato's secretary general, about what happens next with the war in Afghanistan.

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This episode of Frost over the World aired from Friday, November 19, 2010.